Appearance is usually with K gold, K platinum, senior animal skin material.
K gold although the main raw material is gold, but the sweat is acid and air corrosion, for a long time is far from the new beautiful, this requires frequent cleaning and polishing, make watch keep long new.
If it is K platinum, a long time outside the silver layer wear, inside the gold exposure, is not as white as before, so it also needs regular maintenance of white plating, in order to maintain long new.
Leather watchband, not to mention sweat corrosion will make the belt premature hardening cracking, normal maintenance should avoid sweating and rainy period wear belt table.
If the watch is made of steel shell belt, often grinding renovation, can reflect its value.
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